# US 2021/0276897 A1 · In-house closed water filter system to remove carcinogenic 1,4-dioxane and other contaminants to purify drinking water > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0276897 A1 - Document ID: US20210276897A1 - Status: Published application - Kind: A1 - Application number: 17/120,205 - Filed: 2020-12-13 - Published: 2021-09-09 - Earliest claimed: 2020-12-13 - Inventors: ARYA BHUSHAN; PREETI MISRA - Web page: https://patentgrep.com/patent/US20210276897A1 ## CPC - C02F 1/32: with ultraviolet light - C02F 1/725: {by catalytic oxidation} - C02F 1/283: {using coal, charred products, or inorganic mixtures containing them} - C02F 1/325: {Irradiation devices or lamp constructions} - C02F 1/722: {Oxidation by peroxides} - C02F 2101/34: containing oxygen - C02F 2103/06: Contaminated groundwater or leachate - C02F 2201/3223: Single elongated lamp located on the central axis of a turbular reactor - C02F 2209/40: Liquid flow rate - C02F 2209/42: Liquid level - C02F 2301/04: Flow arrangements - C02F 2303/04: Disinfection - C02F 2305/026: Fenton's reagent - C02F 2305/10: Photocatalysts - C02F 2307/10: as part of a potable water dispenser, e.g. for use in homes or offices - C02F 2307/14: Treatment of water in water supply networks, e.g. to prevent bacterial growth - C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes) ## Abstract An in-house closed water filter system to remove carcinogenic 1,4-dioxane and other contaminants to purify drinking water. A resin is engineered by a method developed to identify 1,4-dioxane and remove it using direct photolysis and advanced oxidation processes involving UV/H2O2/Fe(II). The resin is coupled with granulated activated charcoal to create an in-house filter system. ## Claims ### Claim 1 An in-house drinking water purification system comprising: a first unit, wherein the first unit having a top and a bottom opening, wherein the top opening allows an unfiltered water to fill the first unit and the bottom unit allows a flow of water free from 1,4-dioxane and microbes out of the first unit, a second unit, wherein the second unit is connected to the first unit by a first valve, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit, and a third unit, wherein the third unit is connected to the second unit by a second valve, wherein the second valve allows a flow of purified water from the second unit to the third unit. ### Claim 2 (depends on 1) The in-house drinking water purification system of claim 1, wherein the first unit contains a chamber filled with iron oxide bed or resin which act as catalyst to initiate reaction of Fenton's Oxidation to remove the 1,4-dioxane and micobes. ### Claim 3 (depends on 2) The in-house drinking water purification system of claim 2, wherein the first unit contains a first sensor and a second sensor, wherein the first sensor is to indicate the filling of the chamber with the unfiltered water and activate an initiation of addition of hydrogen peroxide from a hydrogen peroxide source in the first unit. ### Claim 4 (depends on 3) The in-house drinking water purification system of claim 3, wherein the second sensor opens the flow of water from the first unit after completion of the Fenton's Oxidation to completely empty water from the first unit. ### Claim 5 (depends on 4) The in-house drinking water purification system of claim 4, the first sensor and the second sensor are configured such that after completely empty water from first unit, the second sensor closes the flow of water out of the first unit and first sensor initiate the filing of the chamber in the first unit with the unfiltered water to completely fill the first unit and activate the initiation of addition of hydrogen peroxide from the hydrogen peroxide source. ### Claim 6 (depends on 3) The in-house drinking water purification system of claim 3, wherein the first unit contains an inbuilt UV light source, wherein the inbuilt UV light source is connected and configured with first sensor and the second sensor to start and stop the Fenton's Oxidation, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit after the Fenton's Oxidation. ### Claim 7 (depends on 6) The in-house drinking water purification system of claim 6, wherein the second unit is filled with a granulated charcoal bed to remove a remaining hydrogen peroxide residue and other contaminants from water, wherein the second valve allows the flow of purified water from the second unit to the third unit, wherein the third unit is served as clean water storage platform to use for drinking. ### Claim 8 A method of making an in-house drinking water purification system, wherein the method comprising: providing a first unit, wherein the first unit having a top and a bottom opening, wherein the top opening allows an unfiltered water to fill the first unit and the bottom unit allows a flow of water free from 1,4-dioxane and microbes out of the first unit, connecting the first unit to a second unit by a first valve, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit, and connecting the second unit to a third unit by a second valve, wherein the second valve allows a flow of purified water from the second unit to the third unit. ### Claim 9 (depends on 8) The method of claim 8, wherein the first unit contains a chamber filled with iron oxide bed or resin which act as catalyst to initiate reaction of Fenton's Oxidation to remove the 1,4-dioxane and micobes. ### Claim 10 (depends on 9) The method of claim 9, wherein the first unit contains a first sensor and a second sensor, wherein the first sensor is to indicate the filling of the chamber with the unfiltered water and activate an initiation of addition of hydrogen peroxide from a hydrogen peroxide source in the first unit. ### Claim 11 (depends on 10) The method of claim 10, wherein the second sensor opens the flow of water from the first unit after completion of the Fenton's Oxidation to completely empty water from the first unit. ### Claim 12 (depends on 11) The method of claim 11, the first sensor and the second sensor are configured such that after completely empty water from first unit, the second sensor closes the flow of water out of the first unit and first sensor initiate the filing of the chamber in the first unit with the unfiltered water to completely fill the first unit and activate the initiation of addition of hydrogen peroxide from the hydrogen peroxide source. ### Claim 13 (depends on 10) The method of claim 10, wherein the first unit contains an inbuilt UV light source, wherein the inbuilt UV light source is connected and configured with first sensor and the second sensor to start and stop the Fenton's Oxidation, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit after the Fenton's Oxidation. ### Claim 14 (depends on 13) The method of claim 13, wherein the second unit is filled with a granulated charcoal bed to remove a remaining hydrogen peroxide residue and other contaminants from water, wherein the second valve allows the flow of purified water from the second unit to the third unit, wherein the third unit is served as clean water storage platform to use for drinking. ### Claim 15 A method of using an in-house drinking water purification system, wherein the method comprising: providing the in-house drinking water purification system, wherein the in-house drinking water purification system comprising: a first unit, wherein the first unit having a top and a bottom opening, wherein the top opening allows an unfiltered water to fill the first unit and the bottom unit allows a flow of water free from 1,4-dioxane and microbes out of the first unit, a second unit, wherein the second unit is connected to the first unit by a first valve, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit, and a third unit, wherein the third unit is connected to the second unit by a second valve, wherein the second valve allows a flow of purified water from the second unit to the third unit, activating a first sensor and a second sensor in the first unit, and purifying the unfiltered water to obtain purified drinking water. ### Claim 16 (depends on 15) The method of claim 15, wherein the first unit contains a chamber filled with iron oxide bed or resin which act as catalyst to initiate reaction of Fenton's Oxidation to remove the 1,4-dioxane and micobes. ### Claim 17 (depends on 16) The method of claim 16, wherein the first sensor is to indicate the filling of the chamber with the unfiltered water and activate an initiation of addition of hydrogen peroxide from a hydrogen peroxide source in the first unit. ### Claim 18 (depends on 17) The method of claim 17, wherein the second sensor opens the flow of water from the first unit after completion of the Fenton's Oxidation to completely empty water from the first unit. ### Claim 19 (depends on 18) The method of claim 18, the first sensor and the second sensor are configured such that after completely empty water from first unit, the second sensor closes the flow of water out of the first unit and first sensor initiate the filing of the chamber in the first unit with the unfiltered water to completely fill the first unit and activate the initiation of addition of hydrogen peroxide from the hydrogen peroxide source. ### Claim 20 (depends on 19) The method of claim 19, wherein the first unit contains an inbuilt UV light source, wherein the inbuilt UV light source is connected and configured with first sensor and the second sensor to start and stop the Fenton's Oxidation, wherein the first valve allows the flow of water free from 1,4-dioxane and microbes from the first unit to the second unit after the Fenton's Oxidation, wherein the second unit is filled with a granulated charcoal bed to remove a remaining hydrogen peroxide residue and other contaminants from water, wherein the second valve allows the flow of purified water from the second unit to the third unit, wherein the third unit is served as clean water storage platform to use for drinking.